Commit efd11d33 authored by Téo Mazars's avatar Téo Mazars

operations: Add "alien-map" operation

Applies sine transformations on color components.
parent 152ac06d
/* This file is an image processing operation for GEGL
*
* GEGL is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* GEGL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#include <math.h>
#ifdef GEGL_CHANT_PROPERTIES
gegl_chant_register_enum (gegl_alien_map_color_representation)
enum_value (GEGL_ALIEN_MAP_COLOR_REPRESENTATION_RGB, "RGB")
enum_value (GEGL_ALIEN_MAP_COLOR_REPRESENTATION_HSL, "HSL")
gegl_chant_register_enum_end (GeglAlienMapColorRepresentation)
gegl_chant_enum (color_represenation, _("Color represenation"), GeglAlienMapColorRepresentation,
gegl_alien_map_color_representation, GEGL_ALIEN_MAP_COLOR_REPRESENTATION_RGB,
_("What representation used for the transformation"))
gegl_chant_double (cpn_1_frequency, _("Component 1 frequency"), 0, 20, 1, _("Component 1 frequency"))
gegl_chant_double (cpn_2_frequency, _("Component 2 frequency"), 0, 20, 1, _("Component 2 frequency"))
gegl_chant_double (cpn_3_frequency, _("Component 3 frequency"), 0, 20, 1, _("Component 3 frequency"))
gegl_chant_double (cpn_1_phaseshift, _("Component 1 phase shift"), 0, 360, 0, _("Component 1 phase shift"))
gegl_chant_double (cpn_2_phaseshift, _("Component 2 phase shift"), 0, 360, 0, _("Component 2 phase shift"))
gegl_chant_double (cpn_3_phaseshift, _("Component 3 phase shift"), 0, 360, 0, _("Component 3 phase shift"))
gegl_chant_boolean (cpn_1_keep, _("Keep component 1"), FALSE, _("Keep component 1"))
gegl_chant_boolean (cpn_2_keep, _("Keep component 2"), FALSE, _("Keep component 2"))
gegl_chant_boolean (cpn_3_keep, _("Keep component 3"), FALSE, _("Keep component 3"))
#else
#define GEGL_CHANT_TYPE_POINT_FILTER
#define GEGL_CHANT_C_FILE "alien-map.c"
#include "gegl-chant.h"
static void
prepare (GeglOperation *operation)
{
GeglChantO *o = GEGL_CHANT_PROPERTIES (operation);
if (o->color_represenation == GEGL_ALIEN_MAP_COLOR_REPRESENTATION_RGB)
{
gegl_operation_set_format (operation, "input", babl_format ("R'G'B'A float"));
gegl_operation_set_format (operation, "output", babl_format ("R'G'B'A float"));
}
else
{
gegl_operation_set_format (operation, "input", babl_format ("HSLA float"));
gegl_operation_set_format (operation, "output", babl_format ("HSLA float"));
}
}
static gboolean
process (GeglOperation *op,
void *in_buf,
void *out_buf,
glong samples,
const GeglRectangle *roi,
gint level)
{
GeglChantO *o = GEGL_CHANT_PROPERTIES (op);
gfloat *in = in_buf;
gfloat *out = out_buf;
gfloat freq[3], phaseshift[3];
gboolean keep[3];
freq[0] = o->cpn_1_frequency * G_PI;
freq[1] = o->cpn_2_frequency * G_PI;
freq[2] = o->cpn_3_frequency * G_PI;
phaseshift[0] = G_PI * o->cpn_1_phaseshift / 180.0;
phaseshift[1] = G_PI * o->cpn_2_phaseshift / 180.0;
phaseshift[2] = G_PI * o->cpn_3_phaseshift / 180.0;
keep[0] = o->cpn_1_keep;
keep[1] = o->cpn_2_keep;
keep[2] = o->cpn_3_keep;
while (samples--)
{
gint i;
for (i = 0; i < 3; i++)
{
out[i] = keep[i] ?
in[i] :
0.5 * (1.0 + sin ((2 * in[i] - 1.0) * freq[i] + phaseshift[i]));
}
out[3] = in[3];
in += 4;
out += 4;
}
return TRUE;
}
static void
gegl_chant_class_init (GeglChantClass *klass)
{
GeglOperationClass *operation_class;
GeglOperationPointFilterClass *point_filter_class;
operation_class = GEGL_OPERATION_CLASS (klass);
point_filter_class = GEGL_OPERATION_POINT_FILTER_CLASS (klass);
operation_class->prepare = prepare;
point_filter_class->process = process;
gegl_operation_class_set_keys (operation_class,
"name" , "gegl:alien-map",
"categories" , "artistic",
"description",
_("Alters colors using sine transformations"),
NULL);
}
#endif
......@@ -3,6 +3,7 @@ bin/gegl.c
bin/gegl-options.c
gegl/gegl-init.c
gegl/module/geglmodule.c
operations/common/alien-map.c
operations/common/bilateral-filter.c
operations/common/bilateral-filter-fast.c
operations/common/box-blur.c
......
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